Objective We continually interact with each other & share information to make decisions together as friends, families, committees, juries, interest groups and institutions. The question of how collective decisions are made dates back many centuries and has been vigorously studied in social psychology and political economics, but the biological basis of collective decision making in human brain is almost entirely unknown. This question is arguably at the heart of human society’s urgent need to communicate effectively & find better ways of arriving at global collective decisions. My research has provided new and potentially important computational models of collective decision-making based on empirical data from visual psychophysics. I propose to characterize the neurobiological basis of joint decisions by combining recent advances in economics and social cognitive neuroscience in a novel interdisciplinary research program that will ask 4 questions: (1)How do we learn to make better collective decisions? (2)What are the brain mechanisms underlying the different psychological components of collective decision making? (3)What makes some people better & some others worse at joint decisions? (4)What is the role of the neuro-modulatory hormones oxytocin & testosterone in collective decisions? I plan to develop a formal theoretical model of collective decision-making (Q1) & use converging evidence from complementary methodologies e.g. behavioural experiments & fMRI (Q2), structural brain imaging (Q3) and neuro-pharmacology (Q4) to test & advance the model. My findings could help understand what physiological events underlie our ability to learn from experience to contribute effectively to group efforts and also disclose the biological basis that makes some of us better and some worse at working in groups . The results may provide a clearer picture of how hormonal interactions in the brain strike a balance between trusting ourselves vs accepting the opinion of others. Fields of science natural sciencesbiological sciencesneurobiologycognitive neurosciencesocial scienceseconomics and businesseconomicssocial sciencespsychologysocial psychology Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Topic(s) ERC-SG-LS5 - ERC Starting Grant - Neurosciences and neural disorders Call for proposal ERC-2012-StG_20111109 See other projects for this call Funding Scheme ERC-SG - ERC Starting Grant Host institution UNIVERSITY COLLEGE LONDON EU contribution € 1 486 197,00 Address GOWER STREET WC1E 6BT LONDON See on map Activity type Higher or Secondary Education Establishments Principal investigator Bahador Bahrami (Dr.) Administrative Contact Giles Machell (Mr.) Links Contact the organisation Opens in new window Website Opens in new window Total cost No data Beneficiaries (1) Sort alphabetically Sort by EU Contribution Expand all Collapse all UNIVERSITY COLLEGE LONDON EU contribution € 1 486 197,00 Address GOWER STREET WC1E 6BT LONDON See on map Activity type Higher or Secondary Education Establishments Principal investigator Bahador Bahrami (Dr.) Administrative Contact Giles Machell (Mr.) Links Contact the organisation Opens in new window Website Opens in new window Total cost No data